{"product_id":"westinghouse-504c743g21-circuit-breaker","title":"Westinghouse | 504C743G21 | Circuit Breaker | 160A | 3-Pole | 600V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eWestinghouse 504C743G21 Circuit Breaker\u003c\/strong\u003e is a bolt-on, three-pole protective device designed for demanding electrical environments. With a 160 A rating and a 600 V maximum operating voltage, this breaker is built to safeguard three-phase systems in retrofit, maintenance, and replacement projects where precise specs matter.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 160 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eKey benefits and use cases:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cstrongdirect-fit for compatible panels:\u003e Use when your system requires a 160 A, 3-pole, 600 V bolt-on solution. The \u003cem\u003e504C743G21\u003c\/em\u003e designation is the strongest reference for compatibility with Westinghouse panel families and similar bolt-on configurations.\u003c\/strongdirect-fit\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance and retrofits:\u003c\/strong\u003e Ideal for upgrading aging protection or replacing failed units without altering your panel’s wiring scheme.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable three-phase protection:\u003c\/strong\u003e Safeguards multi-line electrical circuits common in industrial, commercial, and large residential installations, helping prevent equipment damage from overloads or short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReady for challenging environments:\u003c\/strong\u003e Engineered to perform in systems where a robust, bolt-on breaker is preferred for secure mounting and stable contact reliability.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eInstallation and compatibility tips (based on best-practice guidance for this part):\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eVerify fit and ratings before ordering:\u003c\/strong\u003e Match your panel’s specifications to ensure the 504C743G21 is the correct bolt-on, 3-pole, 600 V device for your setup.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUse the part number as your compatibility reference:\u003c\/strong\u003e The Westinghouse \u003cem\u003e504C743G21\u003c\/em\u003e part number is the most reliable indicator of a proper match in retrofit and replacement scenarios.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePlan for three-phase protection:\u003c\/strong\u003e When upgrading, ensure your distribution panels and downstream equipment are configured for three-phase operation to maximize protection coverage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSafety first:\u003c\/strong\u003e Disconnect power and follow standard lockout\/tagout procedures during installation or replacement to maintain a safe work environment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWho is this ideal for? Electrical contractors, facilities managers, panel builders, and system integrators who need a precise, bolt-on circuit breaker that aligns with Westinghouse specifications for 160 A, 3-pole, 600 V applications. If you’re matching a legacy panel or performing a targeted retrofit, this part—504C743G21—provides a dependable, specification-driven solution that reduces guesswork and helps you maintain reliable electrical protection across your network.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Westinghouse","offers":[{"title":"Default Title","offer_id":46427305803938,"sku":"504C743G21","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/westinghouse-504c743g21-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}